''A cub has been born, the mother looks at shock as it is like an old Lion/ess.''

This disease causes the cub to look older than its age or found in Humans as Progeria. This is a genetic lethal mutation. It makes the cub grow faster and abnormally. The cub will get pass cubhood but slowly weaken, dying at the age of 1 year to 1 year and 5 months.

The looks at it can be seen once its born, a large head and a flatter muzzle then the others. As it grows, it's skin wrinkles and shrinks down. Forcing it to be in an abnormal position. Losing fur every day, it will begin to look like the cat, sphynx but with a large head and odd features.

Once at the age of 1 year, it may die from the mutation, but will definitely die at age 1 year and 5 months.

this is just a small amount of info so ......... just to get the feel of this disease.

ALL CREDIT FROM WIKIPEDIA, PROGERIA AND SAM BERNS SITES ON WIKI